1   /**
2    * Copyright (c) 2000-2009 Liferay, Inc. All rights reserved.
3    *
4    *
5    *
6    *
7    * The contents of this file are subject to the terms of the Liferay Enterprise
8    * Subscription License ("License"). You may not use this file except in
9    * compliance with the License. You can obtain a copy of the License by
10   * contacting Liferay, Inc. See the License for the specific language governing
11   * permissions and limitations under the License, including but not limited to
12   * distribution rights of the Software.
13   *
14   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
17   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
18   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
19   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
20   * SOFTWARE.
21   */
22  
23  package com.liferay.portlet.shopping.util.comparator;
24  
25  import com.liferay.portal.kernel.util.OrderByComparator;
26  import com.liferay.portlet.shopping.model.ShoppingItem;
27  
28  /**
29   * <a href="ItemPriceComparator.java.html"><b><i>View Source</i></b></a>
30   *
31   * @author Brian Wing Shun Chan
32   */
33  public class ItemPriceComparator extends OrderByComparator {
34  
35      public static String ORDER_BY_ASC = "categoryId ASC, price ASC, name ASC";
36  
37      public static String ORDER_BY_DESC =
38          "categoryId DESC, price DESC, name DESC";
39  
40      public static String[] ORDER_BY_FIELDS = {"categoryId", "price", "name"};
41  
42      public ItemPriceComparator() {
43          this(false);
44      }
45  
46      public ItemPriceComparator(boolean asc) {
47          _asc = asc;
48      }
49  
50      public int compare(Object obj1, Object obj2) {
51          ShoppingItem item1 = (ShoppingItem)obj1;
52          ShoppingItem item2 = (ShoppingItem)obj2;
53  
54          Long categoryId1 = new Long(item1.getCategoryId());
55          Long categoryId2 = new Long(item2.getCategoryId());
56  
57          int value = categoryId1.compareTo(categoryId2);
58  
59          if (value == 0) {
60              double price1 = (1 - item1.getDiscount()) * item1.getPrice();
61              double price2 = (1 - item2.getDiscount()) * item2.getPrice();
62  
63              if (price1 < price2) {
64                  value = -1;
65              }
66              else if (price1 > price2) {
67                  value = 1;
68              }
69          }
70  
71          if (value == 0) {
72              value = item1.getName().toLowerCase().compareTo(
73                  item2.getName().toLowerCase());
74          }
75  
76          if (_asc) {
77              return value;
78          }
79          else {
80              return -value;
81          }
82      }
83  
84      public String getOrderBy() {
85          if (_asc) {
86              return ORDER_BY_ASC;
87          }
88          else {
89              return ORDER_BY_DESC;
90          }
91      }
92  
93      public String[] getOrderByFields() {
94          return ORDER_BY_FIELDS;
95      }
96  
97      public boolean isAscending() {
98          return _asc;
99      }
100 
101     private boolean _asc;
102 
103 }